How do I write and read from the SEN0395 using UART?

Hello, I need to adjust the sensors defaults and I see on DrRobots website under their own documentation it says “The module adopts serial communication protocol and uses ASCII code string as command interation and data interaction.” 

When I plug my radar into a USB to UART device, I don't get any output readings from the radar which according to documentation I should be getting readings every second in the following format $JYBSS,par1,par2,par3,par4* and if I send commands such as sensorStop or sensorStart nothing happens. 

I've been digging around I can't figure this out can somebody please help me understand how do I get these reading and how do I send these commands over serial to change parameters of this radar? Please any help would be greatly appreciated.